Shirt pen pocket



FIG. 1 is a perspective view of shirt pen pocket showing my new design, with a pen shown in broken lines to show use;

FIG. 2 is an enlarged perspective view of the shirt pen pocket;

FIG. 3 is a front side elevational view thereof;

FIG. 4 is a left side elevational view thereof; and,

FIG. 5 is a right side elevational view thereof.

The broken lines shown represent unclaimed subject matter and form no part of the claimed design. 

CLAIM The ornamental design for shirt pen pocket, as shown and described. 